1,2,3,4,6,7-Hexachloronaphthalene, 50µg/ml in nonane, 1,2ml Back Catalog number: PN-66S Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 82522 EPA Method 8250 Price on request 2592.34-10UG Benzo[pgr]dinaphtho[8,1,2-bcd:2',1',8'-lmn]perylene, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 188-11-4 Price on request C10303000 L-(+)-Ascorbic acid, certified, 0.25g Price on request